How do you research car problems before spending money?

When researching modifications, maintenance, or common issues for your car, what's the most frustrating part?

For me, I often end up opening 20 forum threads, 10 Reddit posts, and a bunch of YouTube videos just to answer a simple question.

Curious how everyone else researches things:

• Reddit?
• Forums?
• Facebook groups?
• YouTube?
• Google?

And what part of the process annoys you the most?